2026 COMPETITION BULLETINS

IMSA WEATHERTECH CHAMPIONSHIP

Comp Bulletin IWSC #26-01: 10/30/25 IMSA Supplemental Trailer Policy

Comp Bulletin IWSC #26-02: 11/11/25 2026 IMSA WeatherTech Championship Sporting Regulations Publication

Comp Bulletin IWSC #26-03: 1/7/26 IMSA WeatherTech Championship Sporting Regulations Updates 

Comp Bulletin IWSC #26-04: 1/7/26 ROAR and Rolex 24 Event Driver Helmet and FHR Inspections

Comp Bulletin IWSC #26-05: 1/15/26 IMSA WeatherTech Championship Sporting Regulations Updates

Comp Bulletin IWSC #26-06: 1/21/26 GTP Rolex 24 At DAYTONA Tire Usage Notes 

Comp Bulletin IWSC #26-07: 1/21/26 IMSA WeatherTech Championship Sporting Regulations Updates 

Comp Bulletin IWSC #26-08: 1/22/26 2026 Rolex 24 At Daytona Bronze GTP/GTD-PRO Minimum Drive Time

Comp Bulletin IWSC #26-09: 1/23/26 Rolex 24 At Daytona GTP Inspection Schedule 

Comp Bulletin IWSC #26-10: 1/23/26 IMSA WeatherTech Championship Sporting Regulations Updates

Comp Bulletin IWSC #26-11: 3/11/26 IMSA WeatherTech Championship Sporting Regulations Updates 

Comp Bulletin IWSC #26-12: 3/19/26 2027 IWSC Entry Timeline, Registration, & Details

Comp Bulletin IWSC #26-13: 6/17/26 IMSA WeatherTech Championship Sporting Regulations Updates

 

IMSA MICHELIN PILOT CHALLENGE

Comp Bulletin IMPC #26-01: 12/3/25 IMSA Michelin Pilot Challenge Sporting Regulations Publication

Comp Bulletin IMPC #26-02: 12/18/25 IMSA Supplemental Trailer Policy

Comp Bulletin IMPC #26-03: 1/7/26 ROAR and Rolex 24 Event Driver Helmet and FHR Inspections

Comp Bulletin IMPC #26-04: 3/11/26 IMSA Michelin Challenge Sporting Regulations Updates 

Comp Bulletin IMPC #26-05: 4/21/26 IMSA BoP: Laguna Seca TCR Race Event

Comp Bulletin #26-06: 6/17/26 IMSA Michelin Challenge Sporting Regulations Updates 

 

IMSA VP RACING SPORTSCAR CHALLENGE

Comp Bulletin VPRC #26-01: 12/18/25 IMSA Supplemental Trailer Policy

Comp Bulletin VPRC #26-02: 12/19/25 2026 IMSA VPRC Sporting Regulations Publication

Comp Bulletin VPRC #26-03: 1/7/26 ROAR and Rolex Event Driver Helmet and FHR Inspections

Comp Bulletin VPRC #26-04: 2/11/26 2026 IMSA VP Racing SportsCar Challenge Sporting Regulations Updates

Comp Bulletin VPRC #26-05: 2/25/26 IMSA VP Racng SportsCar Challenge Sporting Regulations Updates 

Comp Bulletin VPRC #26-06: 4/8/26 IMSA VP Racing SportsCar Challenge Sporting Regulations Updates

Comp Bulletin VPRC #26-07: 6/17/26 IMSA VP Racing SportsCar Challenge Sporting Regulations Updates 

 

 

PORSCHE CARRERA CUP

Comp Bulletin PCCNA #26-01: 2/11/26 2026 Porsche Carrera Cup North America Sporting Regulations Publication 

Comp Bulletin PCCNA #26-02: 3/11/26 2026 Posche Carrera Cup North America Helmet and FHR Inspections 

Comp Bulletin PCCNA #26-03: 6/17/26 2026 Porsche Carrera Cup North America Sporting Regulations Updates

 

 

LAMBORGHINI SUPER TROFEO

Comp Bulletin LST #26-01: 3/11/26 2026 Lamborghini Super Trofeo Sporting Regulations Publication

Comp Bulletin LST #26-02: 3/11/26 2026 Lamborghini Super Trofeo Helmet and FHR Inspections 

Comp Bulletin LST #26-03: 6/17/26 Lamborghini Super Trofeo Sporting Regulations Updates

Comp Bulletin LST #26-04: 7/16/26 Lamborghini Super Trofeo Sporting Regulations Updates

MAZDA MX-5 Cup

Comp Bulletin MX5 #26-01: 12/17/25 2026 Whelen Mazda MX-5 Cup Presented By Michelin Sporting Regulations Publication

Comp Bulletin MX5 #26-02: 1/7/26 Mazda MX-5 Cup Sporting Regulations Updates 

Comp Bulletin MX5 #26-03: 4/16/26 Mazda MX-5 Cup Sporting Regulations Updates 

Comp Bulletin MX5 #26-04: 6/17/26 Mazda MX-5 Cup Presented by Michelin - CTMP Third-Party Track Days / 34.1

 

MUSTANG CHALLENGE

Comp Bulletin MC #26-01: 2/25/26 2026 Mustang Challenge Sporting Regulations Publication 

Comp Bulletin MC #26-02: 3/11/26 Mustang Challenge Helmet and FHR Inspections 

Comp Bulletin MC #26-03: 6/17/26 2026 Mustang Challenge Sporting Regulations Updates 

 

 




2025 Competition Bulletins

 

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